Refrigerator.



A. K. CROSS.

} REFRIGERATOR, APPLIGATION FILED JULY 3. 1907 Patented Mar. 1, 1910.

'n'ieans Ofelia tight spaces or chambers in said that, in the event ofleakage of air at any vacuum being maintained at. all other parts.

, age space or receptacle, the 'walls of which nn ran erases ANSON K.GROSS, 0F WNTHRGP, EZASSACHUSETTS.

To all whom it mwy concern:

Be it known that I, Anson H. Caoss, of l lV'inthrop, in the county of Sndoll: and State 5 ofMassachusetts, have invented certain new and usefulImprovements in Refrigerators, of which the following is aspecification.

Clhis invention relates to refrigerators or cold storage receptacles,the walls of which are rendered non-conductors of heat by Walls. fromwhich chambers,'air is exhausted to form a Vacuum space practicallysurrounding the storage chamber and preventing heat from being conductedthrough the walls of the receptacle so that a low temperature may bemaintained in the THEE.- tacle with a minimum consumption of ice.

Heretofore it has been proposed to pro vide a vacuum space. or chambersurrounding a storage space, the vacuum space being practicallycontinuous so that, in the event. of leakage of air into the vacuumspace at any-pointin the Wall of the refrigerator, the entire vacuumwill be destroyed.

My invention has for its object to mini mize the loss or impairment ofthe vacuum by leakage at any given point in the wall of a refrigeratorof the -lnss to which. my invcntion relates, and to this end it consistsin a refrigerator comprising hollow Wall sections, each ha ing a spacefrom which air. is adapted to be exhausted, the spaces of the sectionsbeing independent of each other so one point, in the refrigerator Wall,the disturbance of the vacuum will be confined to the section in whichthe leakage occurs, the

Of the accompanymndrawings forming a part of this specification, Figure1 represents a front. elevation of a refrigerator ein mdy ing myinvention. Fig. 2 represents a sec tion on the line 2-2 of Fig. 1. Fig.3 represents a section on the 1 inc 3--3 of Fig. 2.

The same numerals of reference indicate the same parts in all thefigures.

In the drawings which illustrate one cmhodiment of my invention selectedfor purposes of illustration, I have shown a stor- Specification ofLetters Eatent. Application filed Emily 3, 1907. Serial No. 382,0s2;

ally closed closed after,

are composed of sections which are indenendent of each other, v hollowand containing anair-tight space 12. Each space iscomplete Withinitselt, and the j each section bein l.

shreronneroa.

Patented Mar. 1, 19.10.

space 12 of each sect-ion is adapted to be independently exhausted ofair and hermeticso thanv leakage of air into any section will not affectthe vacuum in any other section or sections. Each section is exhaustedanysuitalolc means to form a vacuum, each, ection being hc1:meticallythe exhaustion of the all, As here shown, each of the side walls of thereceptacle composed of a single section, namely, a norlzontal bottomsection l3, \'crti cal side sections l-l. and a horizontal top sec tion15. These sections may be of any s; t able material or materials, andarr-f suitably connected to torn: a storage chan'lbcr of substantiallyair-tight construction. A's here shown, the bottom and side sections areproaided with beveled edges 16 which are prefe aibly-the sides offlanges formed on said sectienaes shown in Figs.- 2 and 3, "said flangesable packing" strips may heinterposed between the beveled edges 16 toterm air-tight joints. The bottom section 13 is shown as provided withdowtmmrdly projecting legs 18 having casters 19!);

preferably hinged to one oi" the side sections so that it. constitutes atop or cover which may he raised to permit access to the interior of thereceptacle. The sections may be provided internally with stay-bolts 19to pro-- vent the sides of the sections from being forced together byatmospheric pressure. The interior of the receptacle may be providedwith suitable "shelves 20 and with an ice receptacle 21, here shown as apan, (lo-'90 by the upper shelves and provided with a Waste pipe 22adapted to conduct away the water resulting from the melting of the ice,said Waste pipe leading tachahly supported to a trapped outlet in thebottom section 13.

Suitable ventilating means may bcemployed to ventilate the interior ofthe receptacle if desired. The sections may he of any suital'ilcmaterial, for example. each section may be cast from aluminum or othersuitable metal.

lt is obvious that the number of sections forming the walls of thestorage receptacle may be greater than that here shown, and l do notlimit. myself to a construction in which each side Wall is made as asingle 10a part.

The air may be exhausted from the sections in any suitable way and anysuitable connected by pelts 1?. Suit- 75 'lili'e top section 15 is 80means may be employed for hermetically r ftlllllg each section after theair has been exhausted from it.

The storage chamber may be either port- 5 able or fixed. 't

A cold storage chamber or structure of l any desired size may be made inaccordan t with my invention. i

structure embodying my lll\'tlll10l1 as above described, may have anouter casing or an inner casing or lii'iing', or both of wood or othersuitable material.

As shown in Fig. 3, the inner walls of the side sections are formedwith'intcgral ledges or cars 28 on which the shelves 20 may be removahlysupported. This integral struc ture provides a support for the shelvesfor regulating any internal attachments to be made to the sections, asby nails or screws or other means which might tend to weaken the innerwalls of the sections so as to pro duce leaks. As also shown in Fig. 3,the bottom section not only has integral legs 18 I but is formed with.an integrally depressed i portiondl to receive dri )pings or water ofcondensation. This depression forms an inj tcgral cup 2- from which thedrippings or water may be drawn through the medium of i any suitableoutlet pipe. The ventilating tubes oi pipes 25 arc also formedintegrally with the iunc and outer walls of the sections so that theprc-rncc o'l saitl pipes or i tubeswill not tend to wcaltcn the wallsol" the sections andresult in leakage of air.

I claim:

1. it refrigerator comprising hollow wall sections, cachet which is castin one piece. and incloscs an indtpcndcnt \tlt'ttlllll cham ber. eachsection having an air outlet adaptcd to be hermetically sealed, thechambers being exhausted and scaled bclorc the set tions ar assembled,said sections bcitr; provided with internal means for supporting theirsides against illll'lOSPllOllC pressure, and

being connected together to form a storage receptacle.

2. A retrlgerator comprising hollow wall sections each of which is anindependent vacuum chamber, said sections being operatlvolyyconnectcd tofornra storage receptacle, the lower or bott om section having in tegrallegs projecting downward to support the bottom section above the floor.

3. A refrigerator comprising hollow wall sections each of which is anindependent vacuum chambeiysaid sections being operatively connected toform a storage rcce taclc, the lower section having an integrally formeddepression or cup shape portion to receive drippings or water ofcondensation.

4. A refrigerator comprising hollow wall sections each of which is anindependent vacuum chamber, said sections being operatively connected toform a storage receptacle, the said sections having integral ledgesadapted to support removable shelves.

5. A refrigerator comprising hollow wall sections each of which is anindependent vacuum cl'iamber, said sections being operatively connectedto form a storage romp-- tacle, one of said sections having pipes ortubes extending entirely through it and in tegral with both the innerand outer walls of the said section.

6.. A refrigerator comprising hollow wall sections each of which isanindependent -vacuum chamber, said sections being operatively connect-edto form a storage rcccptaclc, said sections having beveled edges tormcdwith integral extensions or'tlangcs whicharc boltcd together outside ofthc rc l'rigcrat or.

In testimony whereof I have allixctl. my signature. in presence of twowitnesses.

ANSOX K. CROSS.

W tnesses:

